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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_STRING_H_INCLUDED_
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8 #define _NGX_STRING_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 typedef struct {
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198
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16 size_t len;
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17 u_char *data;
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0
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18 } ngx_str_t;
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19
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20
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198
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21 typedef struct {
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22 ngx_str_t key;
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23 ngx_str_t value;
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24 } ngx_keyval_t;
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25
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26
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286
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27 #define ngx_string(str) { sizeof(str) - 1, (u_char *) str }
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28 #define ngx_null_string { 0, NULL }
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26
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29
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30
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286
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31 #define ngx_tolower(c) (u_char) ((c >= 'A' && c <= 'Z') ? (c | 0x20) : c)
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32 #define ngx_toupper(c) (u_char) ((c >= 'a' && c <= 'z') ? (c & ~0x20) : c)
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33
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34
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35 #define ngx_strncmp(s1, s2, n) strncmp((const char *) s1, (const char *) s2, n)
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36
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37
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122
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38 /* msvc and icc7 compile strcmp() to inline loop */
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39 #define ngx_strcmp(s1, s2) strcmp((const char *) s1, (const char *) s2)
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40
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41
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42 #define ngx_strstr(s1, s2) strstr((const char *) s1, (const char *) s2)
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43 #define ngx_strlen(s) strlen((const char *) s)
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44
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45
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46 /*
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122
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47 * msvc and icc7 compile memset() to the inline "rep stos"
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48 * while ZeroMemory() and bzero() are the calls.
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122
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49 * icc7 may also inline several mov's of a zeroed register for small blocks.
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50 */
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64
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51 #define ngx_memzero(buf, n) (void) memset(buf, 0, n)
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52 #define ngx_memset(buf, c, n) (void) memset(buf, c, n)
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53
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54
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132
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55 #if (NGX_MEMCPY_LIMIT)
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56
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57 void *ngx_memcpy(void *dst, void *src, size_t n);
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58 #define ngx_cpymem(dst, src, n) ((u_char *) ngx_memcpy(dst, src, n)) + (n)
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59
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60 #else
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61
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122
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62 /*
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63 * gcc3, msvc, and icc7 compile memcpy() to the inline "rep movs".
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64 * gcc3 compiles memcpy(d, s, 4) to the inline "mov"es.
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65 * icc8 compile memcpy(d, s, 4) to the inline "mov"es or XMM moves.
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66 */
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64
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67 #define ngx_memcpy(dst, src, n) (void) memcpy(dst, src, n)
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28
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68 #define ngx_cpymem(dst, src, n) ((u_char *) memcpy(dst, src, n)) + (n)
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69
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132
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70 #endif
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71
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72
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122
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73 #if ( __INTEL_COMPILER >= 800 )
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74
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75 /*
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76 * the simple inline cycle copies the variable length strings up to 16
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77 * bytes faster than icc8 autodetecting _intel_fast_memcpy()
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78 */
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79
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80 static ngx_inline u_char *
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81 ngx_copy(u_char *dst, u_char *src, size_t len)
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82 {
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83 if (len < 17) {
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84
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85 while (len) {
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86 *dst++ = *src++;
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87 len--;
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88 }
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89
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90 return dst;
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91
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92 } else {
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93 return ngx_cpymem(dst, src, len);
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94 }
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95 }
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96
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97 #else
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98
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99 #define ngx_copy ngx_cpymem
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100
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101 #endif
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102
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103
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104 /* msvc and icc7 compile memcmp() to the inline loop */
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105 #define ngx_memcmp memcmp
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106
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107
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108 u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n);
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34
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109 u_char *ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src);
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52
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110 u_char * ngx_cdecl ngx_sprintf(u_char *buf, const char *fmt, ...);
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111 u_char * ngx_cdecl ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...);
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112 u_char *ngx_vsnprintf(u_char *buf, size_t max, const char *fmt, va_list args);
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4
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113
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286
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114 ngx_int_t ngx_strcasecmp(u_char *s1, u_char *s2);
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115 ngx_int_t ngx_strncasecmp(u_char *s1, u_char *s2, size_t n);
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116
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117 ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n);
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4
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118 ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n);
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274
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119 ngx_int_t ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2);
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0
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120
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121 ngx_int_t ngx_atoi(u_char *line, size_t n);
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50
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122 ssize_t ngx_atosz(u_char *line, size_t n);
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123 off_t ngx_atoof(u_char *line, size_t n);
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124 time_t ngx_atotm(u_char *line, size_t n);
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0
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125 ngx_int_t ngx_hextoi(u_char *line, size_t n);
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126
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127 void ngx_md5_text(u_char *text, u_char *md5);
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128
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129
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130 #define ngx_base64_encoded_length(len) (((len + 2) / 3) * 4)
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131 #define ngx_base64_decoded_length(len) (((len + 3) / 4) * 3)
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132
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2
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133 void ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src);
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134 ngx_int_t ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src);
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135
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206
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136 uint32_t ngx_utf_decode(u_char **p, size_t n);
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137 size_t ngx_utf_length(u_char *p, size_t n);
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76
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138 u_char * ngx_utf_cpystrn(u_char *dst, u_char *src, size_t n);
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139
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140
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150
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141 #define NGX_ESCAPE_URI 0
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142 #define NGX_ESCAPE_ARGS 1
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143 #define NGX_ESCAPE_HTML 2
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144
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145 #define NGX_UNESCAPE_URI 1
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146
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147 uintptr_t ngx_escape_uri(u_char *dst, u_char *src, size_t size,
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42
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148 ngx_uint_t type);
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150
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149 void ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type);
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0
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150
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151
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152 #define ngx_qsort qsort
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153
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154
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155 #define ngx_value_helper(n) #n
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156 #define ngx_value(n) ngx_value_helper(n)
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157
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158
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159 #endif /* _NGX_STRING_H_INCLUDED_ */
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